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Structure Optimization for Backrest frame of CRH Seat Based on DOE Analysis

机译:基于DOE分析的CRH座椅靠背框架结构优化

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The stiffness of the seat from CRH high speed train was studied.First,FEM analysis was performed on the entire seat and the backrest frame.Results showed that the backrest frame accounts for most of the seat's deformation.Then a three factors and three levels orthogonal experiment was designed to find which component affects the stiffness of backrest.From the results of nine experiments,conclusion that side beams have the high sensitivity on seat stiffness.Finally,size optimization was carried on to find best cross section of the side beam.The FEM analysis of new design showed that the maximum deformation of the seat was 9.27mm,decreased by 24.1% compared with original design
机译:研究了CRH高速列车的座位的刚度。首先,在整个座椅和靠背框架上进行有限元分析。结果表明,靠背框架占据了大部分座椅的变形。该一个三个因素和三个级别正交设计实验旨在找到哪些组件影响靠背的刚度。从九个实验结果的结果,结论侧梁对座椅僵硬具有高灵敏度。最后,继续优化侧梁的最佳横截面。新设计的有限元分析表明,与原创设计相比,座椅的最大变形为9.27mm,减少了24.1%

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